Many Presets Appear Twice in the ABSYNTH 4 Browser

With the ABSYNTH 4.0.4 (and 4.0.5) updates, ABSYNTH changed the location for the sounds from the ABSYNTH 3 Factory Content. Those updates saved the content to a subfolder of the ABSYNTH 4 sounds folder, and left the old folder intact. In order to fix this, proceed as follows: